Using an ampersand in scanf()

Posted by Rob on Stack Overflow See other posts from Stack Overflow or by Rob
Published on 2010-03-13T19:36:11Z Indexed on 2010/03/13 19:45 UTC
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When I compile scanf("%s", &var);, gcc sends back a warning:

warning: format ‘%s’ expects type ‘char *’, but argument 2 has type ‘char (*)[20]’

however when I compile scanf("%s", var);, no warning is applied. Both pieces of code work and the book I am reading specifically says to use the ampersand, but even it doesn't in some of the examples.

My question is, should I continue to use the ampersand, even when the book doesn't specify?

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Using an ampersand in scanf() - Developer IT

Using an ampersand in scanf()

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